Means for automatically stopping the motors of talking-machines.



L. NORMAN.

MEANS FOR AUTOMATICALLY STOPPING THE MOTORS 0F TALKING MACHINES.

APPLICATION FILED [EBv 5. 1915 1,172,304. Patented Feb. 22,1916.

' z SHEETS--SHEET 1.

L. NORMAN.

MEANS FOR AUTOMATICALLY STOPPING THE MOTORS OF TALKING MACHINES.

APPLICATION FILED FE-B. 5| l9l5.

1,172,304. Patented Feb. 22,1916.

2 SHEETS-SHEET 2 F i Q i 6-1 i 18 3 5 l 15 21 3 u ueuloz q vHwwoous O[ )Wdl f UTED STATES PATENT OFFICE.

LUDWIG NORMAN, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF TO JACOB WOLKE, 0F BROOKLYN, NEW YORK.

MEANS FOR AUTOMATICALLY STOPPING THE MOTORS OF TALKING-MACHINES.

Specification of Letters ratent.

Patented Feb. 22, 1916.

Application filed February 5, 1915. Serial No. 6,292.

T 0 all 10/10/22 it may concern:

Be it known that I, Lr'nwio 30mm), a

citizen of the United States, and a resident .in the art to which it appertains to make and use the invention, reference being had to the accompanying drawings, and to letters or figures of; reference marked thereon, which form a partof this specification.

Figure 1;is a plan view of the invention, as applied with parts broken away, the slide being shown in dotted lines in the position of engagement with the needle. Fig. 2 is a section on'the line 22, Fig. 1, with parts broken away. lfig. 3 is a perspective view of the invention, with parts detached from each other. Fig". 4 is a detail side view of the disk weight. Fig. 5 is a detail plan view of the same. l

The inventipn has relation to means for automatically 'stopping the motor of a sound reproducing or talking machine at the end of the reproduction, or when the needle has reached the end of the groove in the record, avoiding the hecessityfor stopping the machine by hand, the object being to provide simple and efficient means, readily applicable to the cimmon type of machine using a fiat or disk ecord, without change in the machine or in the record.

The invention consists in the novel construction and combinations of parts, as hereinafter set forth.

In the accompanying drawings, illustrat ing theiinven tion, the numeral 2 designates a talking machine, 3 the disk record thereof, 4 the turn table upon which the record rests, 5 the shaft ofgsaid table, 5' the top extension of said shaft engaged with the center hole of the record, 6 the spring brake nor mally bearing against the edge of the turn table to hold it stationary, 7 the usual pivoted lever having control of the spring brake to start and stop the machine, 8 the sound box and 9 the needle.

The lever 7 usually has movement upon the guideway 10, from stop 11 to stop 12 to start the machine. and back again to stop 11 to stop the machine. When the lever is moved, to half-way position between stops 11 and 12, if released it will fly back, under the influence of the spring of the brake, to stop position, and it is designed in the present case to engage and hold the lever at this halfway position during the playing of the record, and to automatically release the lever at the end of the playing.

The attachment to the machine is descr bed as follows: 14 is a metal disk or weight, having a bottom seat 15 designed for l'Oll lOVllble engagement with the top extension 5 of the turntable shaft, the center post of said disk being provided with an upper cam surface 16', engaged with the lower cam surface 17 of a loose rotatable r ng 18 of said post, whereby when the cam ringis turned it will ride or move upwardly upon the post. The center post is provided with a top pin 15 extending above the cam ring. A slide 19 is carried-by the ring 18, the branches of said slide having adjustable engagement with perforations 20 of the ring, and one end of the slide having downward extension at 21, adjacent to the top surface of the disk record.-

A lever 22 is pivoted to the top of the easing of the machine, adjacent to the controlling lever thereof, usually by a screw-post 12, taking the place of the usual stop screw, one arm of said lever having removable connection by link 22 with the handle end of the controlling lever, and the other arm of said lever having connection by a. cord or wire 24 with a ring 25. The lever 22 is provided with a fulcrum standard 26, from the respective top and bottom of which the arms of the lever have extension, in order that the cord or wire shall extend above the to of the disk record and the link 22 shall be located about on a level with the controlling lever. This fulcrum standard is preferably made in the form of a coiled spring with which the screw-post 12 has engagement as a pivot post.

In the application of the device the metal disk is engaged with the top extension of the turn table shaft, the screw-post is placed in position engaging the coiled spring standard of the lever 22, the link 22 is engaged with the controlling lever, the slide is ad-' justed so that its downward extension will be located properly with respect to the end spiral of the particular record being played, and the cord or wire is pulled until the controlling lever has been moved about half way between stops 11 and 12, or until the brake upon the turn table has been released, the end ring of the cord or wire being then placed over the top pin of the post 16 as a cap to hold the controlling lever in released position. The turn table, carrying the record disk, now starts to turn, and will continue turning until the sound reproduction. or playing is completed, the disk weight turning with the record, and the needle when reaching theend spiral of the groove in the record engaging the slide 19 (said slide normally turning with thedisk weight) and stopping the-slide and the cam ring, the weight proper continuing to turn with the record, the result being that the disk weight will turn about once around (the slide being held stationary), or until the .cam ring has been raised sufficiently to release the end ring 25 against which it bears. The end ring is pushed upward by the cam ring until it escapes from the top pin 15 ofthe center post, when the controlling lever automatically flies back to stop position and the playing of the record is stopped.

The invention is designed to be used with any disk phonograph. Proper change is made in the brake according to the particular phonograph with which the device is used.

What I claim is 1. In a talking machine having a turntable provided with a center shaft, a swing- Copies of this patent may be obtained for ing element and a controlling lever, a weight engaging said shaft and resting upon said table, a member upon said weight having cam means for raisingthe same upon turning of the Weight in one direction, and means for causing it to turn with said weight-in the opposite direction, said member having means for engagement with said swinging element, said weight having a top extension,

and a cap releasably engaging said top extension and having spring means of connection with said lever.

2. In a talking machine having a turntable provided with a center shaft, a swinging element anda controlling lever, a weight engaging said shaft and resting upon said table, said weight having a top extension and an upper cam surface the ends of which are connected by a shoulder, a member upon said weight having a lower cam surface the ends of which are connected by a shoulder, a slide carried by said member and adapted for engagement with said swinging element, a cap releasably engaging said top extension, and a spring lever having at one end means of connection with the controlling five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

